AT297609B - Bohrgerät - Google Patents

Bohrgerät

Info

Publication number
AT297609B
AT297609B AT1145568A AT1145568A AT297609B AT 297609 B AT297609 B AT 297609B AT 1145568 A AT1145568 A AT 1145568A AT 1145568 A AT1145568 A AT 1145568A AT 297609 B AT297609 B AT 297609B
Authority
AT
Austria
Prior art keywords
drilling rig
rig
drilling
Prior art date
Application number
AT1145568A
Other languages
English (en)
Original Assignee
Navenby Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Navenby Ltd filed Critical Navenby Ltd
Priority to AT1145568A priority Critical patent/AT297609B/de
Application granted granted Critical
Publication of AT297609B publication Critical patent/AT297609B/de

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/322—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools cutter shifted by fluid pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
AT1145568A 1968-11-25 1968-11-25 Bohrgerät AT297609B (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT1145568A AT297609B (de) 1968-11-25 1968-11-25 Bohrgerät

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1145568A AT297609B (de) 1968-11-25 1968-11-25 Bohrgerät

Publications (1)

Publication Number Publication Date
AT297609B true AT297609B (de) 1972-04-10

Family

ID=3628813

Family Applications (1)

Application Number Title Priority Date Filing Date
AT1145568A AT297609B (de) 1968-11-25 1968-11-25 Bohrgerät

Country Status (1)

Country Link
AT (1) AT297609B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0065284A1 (de) * 1981-05-16 1982-11-24 Norton Company Räumvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0065284A1 (de) * 1981-05-16 1982-11-24 Norton Company Räumvorrichtung

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee